This is a nice compalation of quotes by Srila Prabhupada on the class of devotee known as ‘ahajiya’.

“A class of so-called devotees known as prākṛta-sahajiyās sometimes display devotional symptoms to exhibit their good fortune. They are pretending, however, because these devotional features are only external. The prākṛta-sahajiyās exhibit these symptoms to advertise their so-called advancement in love of Kṛṣṇa, but instead of praising the prākṛta-sahajiyās for their symptoms of transcendental ecstasy, pure devotees do not like to associate with them. It is not advisable to equate the prākṛta-sahajiyās with pure devotees. When one is actually advanced in ecstatic love of Kṛṣṇa, he does not try to advertise himself. Instead, he endeavors more and more to render service to the Lord.” (Caitanya-caritāmṛta Antya 20.28, Purport)